The Minn Kota MKR-US2-13 Universal Sonar 2 Adapter Cable for the Humminbird ONIX Fishfinder connects your Universal Sonar 2 transducer with a Humminbird ONIX fishfinder. Featuring shielded, waterproof (IP68 rated) connectors that are tipped with metal in order to prevent sonar interference*200 kHz/83 kHz compatible. Provides traditional 2D sonar only.